Battery Life

Nailing performance is one thing, but in order to really sell Medfield and other upcoming SoCs to OEMs, Intel has to deliver battery life and power consumption that's competitive. It's about performance/power in the SoC space. First, it's worthwhile to note that the X900 includes a relatively small battery, at just 5.4 Whr. Of late, batteries over 6 Whr seems like the norm, and I'm told that future designs including the Motorola phone will probably include larger ones. It's just good to have that frame of reference and this chart should help:

Battery Capacity

Intel notes battery life in their own X900 announcement blast as being around 5 hours of continuous 3G browsing and 8 hours of talk time. Our own numbers end up being pretty darn close, at 4.6 hours and 8.5 hours for those two metrics, respectively. 

As a reminder, the browsing tests happen at 200 nits and consist of a few dozen pages loaded endlessly over WCDMA or WiFi (depending on the test) until the phone powers off. The WiFi hotspot tethering test consists of a single attached client streaming 128 kbps MP3 audio and loading four tabs of the page loading test through the handset over WCDMA with the display off. 

Web Browsing (Cellular 3G - EVDO or WCDMA)

As a smartphone the X900 does a bit below average here, but as we mentioned it also has an unusually small battery for a modern flagship Android smartphone. If we divide battery life by battery capacity, we can get a better idea for how the Medfield platform compares to the competition:

Normalized Battery Life - Web Browsing (Cellular 3G)

Normalizing for battery capacity, the X900 actually does a bit above average. In other words, the Medfield platform appears to be just as power efficient as some of the newer OMAP 4 based smartphones.

On WiFi the situation is no different:

Web Browsing (WiFi)

Again we see reasonable numbers for the X900 but nothing stellar. The good news is that the whole x86 can't be power efficient argument appears to be completely debunked with the release of a single device. To move up in the charts however, Intel needs to outfit its reference design with a bigger battery - something I've heard is coming with the Z2580's FFRD. The normalized results put the X900 at the middle of the pack:

Normalized Battery Life - Web Browsing (WiFi)

We see similar results in our talk time and 3G hotspot tests:

Cellular Talk Time

Normalized Battery Life - Cellular Talk Time

WiFi Hotspot Battery Life (3G)

Normalized Battery Life - WiFi Hotspot (3G)

GPU Performance Camera - Stills and Video
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  • diulaylomochohai - Thursday, April 26, 2012 - link

    Where are the numbers for HTC 1X and 1S??? Let see how much INTC is off from latest and greatest from NVDA and QCOM??? Reply
  • dwade123 - Friday, April 27, 2012 - link

    Intel proves x86 can compete. With Intel's engineering and manufacturing advantages, Intel may soon surpass ARM in just about everything in the future. I still remember those who thinks ARM's transition to desktop is a threat to the entirety of Intel. Nope. It's the other way around. Intel is invading the low wattage CPU arena. Hate them or love them. The future is Intel. Reply
  • jwcalla - Friday, April 27, 2012 - link

    I lol'd. Reply
  • jwcalla - Friday, April 27, 2012 - link

    Apple just crapped out $12 billion in pure profit in just the last quarter. That's over 4x the profit that Intel saw, and Apple had almost 4x as much total revenue as Intel.

    The iCraze is in full song and Android is right up there with them. The masses don't care about x86 on a smartphone. And they're not going to. They want the iShiny. Only the dinosaurs that are hooked into these mythical "necessary" legacy x86 mobile apps are going to care about an Intel phone or tablet. And they're going to want them sporting a turbo button and USB-powered 5.25" floppy drive.
    Reply
  • pheadland - Friday, April 27, 2012 - link

    Small correction: I know Samsung says the GS2 only takes 32GB SD cards, but numerous people, including me, have 64GB SDXC cards working just fine in their GS2s (and many other Android phones).

    This trend to omit SD expansion and provide only 16GB built-in is puzzling and annoying. I have around 40GB of music. TV shows and movies can run multiple GB each. Streaming just doesn't cut it in rural areas or on planes.
    Reply
  • phoenix_rizzen - Wednesday, May 02, 2012 - link

    Have you put more than 32 GB of data on that 64 GB card, to make sure it's actually able to use all of it? Just curious, more than anything. Reply
  • Exophase - Friday, April 27, 2012 - link

    In the article you say that the translations are taken from Intel's servers in order to avoid the overhead of doing it on the phone. I doubt this is true, because based on Intel's publications the translation in its current state isn't that sophisticated and unless it is very poorly coded there's no way it'd be slower to do it on the device than pull it off the network.

    I think the real reason they did this is so they can improve the translation quality w/o updating the phones. Part of this could include hand optimizing hot spots or fixing incompatibilities in some of the more problematic games. Maintaining a database of program specific modifications on every phone would not be a good move.

    The article had some good information but I'm disappointed in the total lack of attention given to games. In the big list of apps that work fine I could only spot one game. For comparison, S|A tried two games - both worked, but one of them had awful performance. The phone game market is huge right now and it'd be nice to see someone try several - dozens, perhaps? - of games on the unit. But if they don't, the review should at least indicate that it's not focusing on it. With reviews like this it feels like phone gaming is almost completely devalued, which is bizarre given that several GPU benchmarks are performed, and GPU performance benefits little more than gaming.

    Of course, the battery life tests also don't address gaming. The iPhone 4S review had at least one gaming test (for something really resource intensive) so it's not like there's zero precedent for it.

    The big open questions for Intel putting x86 phones have never been if they can implement competitive GPUs or media blocks or even if they can have very low power consumption when there's low CPU activity. These things are obvious and Intel has already proven themselves on all of these fronts. What people want to know, or at least what I want to know, is what the power consumption is like when the CPU is being heavily accessed. In other words, I want an idea of perf/W. Talk time tests use a negligible amount of CPU. Browser tests use an unknown amount of CPU - it could be literally anything depending on what sites you use and how the idle parameters are tuned. I'd love to see some CPU utilization + frequency graphics during this test. But suffice it to say, if you're trying to simulate the user browser experience it'll consists of small periods of heavy activity while pages are loaded and vast periods of low activity while the user reads what's on the page.

    This is totally different from at least a lot of games, where the CPU constantly has to do something. This both increases the average frequency it has to operate in and gives it less time to go from full idle to full activity.

    At the very least it'd be nice to see some video playback battery tests. This (ideally) doesn't use much CPU either, and I'm sure Medfield does just fine here, but it's at least an important use case that should be validated. When you're on an airplane I'm sure you won't be using your phone for talking or web browsing.
    Reply
  • kuroxp - Monday, May 21, 2012 - link

    say sorry! see updates. :D Reply
  • sjprg2 - Sunday, April 29, 2012 - link

    Are all the cell phone makers STUPID? Where is the hands free bluetooth support with caller ID such as the Motorola V750 has? These are supposed to be phone! You can't drive in Califorina with the existing smartphones. They are not legal! Reply
  • derodg - Monday, May 07, 2012 - link

    You people are forgetting one very important thing here. This is x86 device! I should in theory be able to run any x86 compatible OS. Which includes Windows 8 that has a touch interface. This means I could dock my phone to a larger display use a keyboard and mouse. Then pick it up an walk out the door and use the same device.

    And once they get dual-cores in the Atom. Not only can I just buy one app. I can use it on my desktop and mobile device because they both would be the same.
    Reply

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